/**扩展 spine 的 update 方法 达到在编辑模式下 自动播放动画的目的 */
if (CC_EDITOR) {
	sp.Skeleton.prototype['update'] = function (dt) {
		//if (CC_EDITOR) return;
		if (CC_EDITOR) {
			cc['engine']._animatingInEditMode = 1;
			cc['engine'].animatingInEditMode = 1;
		}
		if (this.paused) return;

		dt *= this.timeScale * sp['timeScale'];

		if (this.isAnimationCached()) {
			// Cache mode and has animation queue.
			if (this._isAniComplete) {
				if (this._animationQueue.length === 0 && !this._headAniInfo) {
					let frameCache = this._frameCache;
					if (frameCache && frameCache.isInvalid()) {
						frameCache.updateToFrame();
						let frames = frameCache.frames;
						this._curFrame = frames[frames.length - 1];
					}
					return;
				}
				if (!this._headAniInfo) {
					this._headAniInfo = this._animationQueue.shift();
				}
				this._accTime += dt;
				if (this._accTime > this._headAniInfo.delay) {
					let aniInfo = this._headAniInfo;
					this._headAniInfo = null;
					this.setAnimation(0, aniInfo.animationName, aniInfo.loop);
				}
				return;
			}

			this._updateCache(dt);
		} else {
			this._updateRealtime(dt);
		}
	};
}
